Question

Which relation does not represent a function? A) a vertical line B) y = 5 9 x - 3 C) a horizontal line D)

Answer 1

A) a vertical line.

Explanation:

We use the vertical line test to determine whether a graph of a relation is a function or not.

The graph of a vertical line will not pass the vertical line test.

Hence a vertical line does not represent a function.

The graph of y=59x-3 will pass the vertical line test.

A horizontal line will also pass the vertical line test.

Answer 2

A. Vertical line

Explanation:

To identify a relation if it is a function, we conduct a vertical line test on a graph where our graph should hit the vertical line in exactly one point. If we have a vertical line then all its points will hit during the vertical line tesf, thus it is not a fubction.